I own two different versions of Muddy Waters' 'I got my mojo working' on diferent compilation cd's, but neither of them say which harmonica player they feature. I assume, since the solos are the same on both recordings, that it's the same player, but who is it?

The original recorded version from Muddy in the late 50's (studio version) had Little Walter on harp, the version cut live at the Newport Jazz Festival in 1960 has James Cotton on harp, and the other best known version came from the LP "Fathers & Sons," with Paul Butterfield on harp.

One of em's on 'Hell of a night with the Blues' by Emporio compilations, the other is on 'The Story of the Blues' by Music Digital on DeltaMusic. Both are live recordings. Neither feature a long enough instrumental beak to be the one where he dances (I think that's the Newport one?)